shell:$ nslookup -timeout=2 -retry=1 'www.feitsui.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
www.feitsui.com	canonical name = o1.feitsui.com.
Name:	o1.feitsui.com
Address: 158.101.142.91